Tusa APA Active Purge AssistTUSAs Active Purge Assist system is a revolutionary BCJ accessory technology. This pneumatically assisted purge system and newly designed OPEV (Over Pressure Exhaust Valve) offers significantly enhanced flow rates over a standard inflator system, which allows for immediate purge and inflation response. FEATURES Revolutionary pneumatic assisted purge system for TUSA BCJs Increased flow rates (inflate deflate) for better performance over standard